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(No Model.)

A. J. FRITH. HOISTING BUCKET.

No 468,652. Patented Feb. 9, 1892;.

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UNITED STATES PATENT OFFICE.

ARTHUR .T. FRITH, OF NEWV Y ORK, N. Y.

HOITSTING-BUCKET.

S1ECIFICATION forming part of Letters Patent N 0. 468,652, dated February 9, 1892.

' Application filed August 31, 1891. Serial No. 404,380. (No model.)

To a whom it may concern.-

Be it known that I, ARTHUR J. FRITH, a citizen of the United States, residing at No. 10 \Vest Twenty-ninth street, in the city of New York, county of New York, State of New York, have invented a new and useful Hoisting-Bucket, of which the following is a spcci-.

tication.

My invention relates to improvements in hoisting-buckets which have two swinging jaws, which close to fill the bucket and open to discharge the load.

The invention will first be described in detail, and then particularly set forth in the claims.

In the accompanying drawings, Figure 1 is a view of the bucket with the jaws closed. Fig. 2 is a view of the bucket with the jaws open, and Fig. 3 is a View of a bucket partially open with another method of attaching the closing-chains.

Similar letters refer to similar parts throughout the several views.

A A are two clam-shell-shaped jaws swinging upon a frame 13 from shafts g, which may or may not run through from side to side. The frame B carries a shaft 1), on the ends of which are wound chains or ropes 0 0, which are attached to the jaws A A. The shaft D also carries a drum E attached to it, around which is wrapped the chain or rope m. Upon the frame B is a casing or housing 0, within which revolve the drum E and the sheaves ff. To each of the jaws A A an attachment is made, as by the chains h h, which pass between and out of the sheaves f fand join into one connection Z, as shown.

The operation of this bucket is as follows: Let the bucket be closed, as in Fig. 1, and the weight supported by the chain or rope m. Then if a strain be taken on the chain Z and m be slackened, the entire weight of bucket and load will fall onZ and through it h be carried to the outside of the jaws A A, throwing them open and unwinding the chains 0 o from each end of the shaft D, thus causing it to revolve and Wind upon the drum E the chain or rope m, as shown in Fig. 2. The hoisting-bucket is now open, and if a strain be taken on chain m and Z be slackened, the chain or rope m is unwound from the drum E, revolves it and the shaft D and winds up the chains 0 0 o 0, thus drawing the jaws A A together and toward the shaft D until the position assumed is that of Fig. 1 and the bucket is closed. In this operation the chains h h are drawn by the jaws A A back through and between the sheaves ff. The casing 0, carried by the frame B, serves to form a hearing for the shaft D to carry the sheaves ff, and by surrounding the drum E prevents the rope or chain m when slack from getting entirely off to one side from the drum E.

In Fig. 3 the ropes or chains h h are attached directly to the jaws A A and are joined together in a bight and held by the rope or chain Z, operating to open the bucket exactly as shown in the other figures, though said ropes or chains are not rove through guidesheaves, as shown in Figs. 1 and 2. In Fig. 3 also there is shown but a single guidesheave instead of two in the top of the housing 0. This sheave serves as a guide for the rope m in Fig. 3 in place of the two sheaves shown in the other figures. The chains 0 0 in Fig. 3 pass each as one piece over the sheaves p p in the jaws A A, and each end of said chains is secured fast to the shaft D, as in the other figures, the operation of said ropes or chains 0 0 under the action of the rope or chain m on the drum E being the same in each case in closing the jaws of the bucket. The jaws A A may also carry weights at s s, as in Fig. 3, which will cause the bucket-jaws to open more easily. I

I am aware that previous to my invention hoisting-buckets have been operated by two chains, therefore I do not wish to claim such a combination, broadly; but

IVhat I do claim as my invention, and desire to secure by Letters Patent, is-- 1. A hoisting-bucket composed of two clamshaped jaws swinging on separate centers in a frame, said frame being provided between its ends with a transverse housing carrying therein a winding-drum secured fast to a shaft journaled in said housing and in the ends of said frame, substantially as set forth.

2. A hoisting-bucket composed of two claim shaped jaws swinging on separate centers in a frame and provided each with a weight, as s, tending to open said jaws, and said frame being provided between its ends with a housing carrying therein a winding-drum secured fast to a shaft journaled in said housing and in the ends of said frame, substantially as set forth.

3. In a hoisting-bucket, the combinationof two jaws, as A A, swinging on separate centers in a frame, a housing provided with a guide sheave or sheaves, and a power-multiplying device consisting of a winding-drum provided with a rope or chain secured to its periphery and guided by said sheave or sheaves, and a winding-shaft and ropes or chains, as 0, each secured to one of said jaws and to said shaft, so as to be wound each upon said shaft to close said jaws by the revolution of said drum, substantially as set forth.

at. In a hoisting-bucket, the combination of two jaws, as A A, swinging on separate centers in a frame, a housing provided with a guide sheave or sheaves, a power-multiplying device consisting of a winding-drum provided with a rope or chain secured to its periphery, and a winding-shaft and ropes or chains, as 0, each secured to one of said jaws and to said shaft, so as to be wound upon said shaft to close said jaws by the revolution of said drum, and a rope or chain secured to each jaw and guided by said sheave or sheaves to open said jaws, substantially as set forth.

5. In a hoisting-bucket, the combination of two jaws journaled in a frame provided between its ends with a transverse housing, a power multiplying device consisting of a winding-drum within said housing mounted on a winding-shaft and provided with a rope or chain, as m, secured to its periphery and passing through the top of said housing, said shaft being journaled in said frame and housing and provided with ropes or chains, as 0. secured to said jaws for closing the same, and a rope or chain secured to each jaw for opening the same and secured in a bight to a single pendent rope or chain, substantially as and for the purposes set forth.

Signed by me the 28th day of August, A. D. 1891.

ARTHUR J. FRITH.

Witnesses:

A. B. MORGAN, E. H. NIES. 

